array=[{'point1': ['20.900', '15.300', '20.400'], 'point2': ['0.600', '34.700', '8.100'], 'point3': ['12.100', '15.800', '2.300'], 'point4': ['15.000', '5.800', '16.900']}]
new_array=array[0]
for i in new_array.values():
k=0
for j in i:
i[k]=int(float(j))
k=k+1
print(new_array)